HoleBASE SI - Recreating Sections from Saved Section Lines

Hi all, 

  Looking to recreate sections from saved section lines in HoleBASE SI v1.34.3.68.

Have saved the section line, but cant create sections as the "Create Section" Button is greyed out. Anybody know a way to reactivate the line so I don't have to keep drawing new section lines. 

Cheers.